Exam 1 revised shit Flashcards
How long is the ovum period?
conception to 14 days
How long is the embryo period?
day 15 to 8 weeks
(organs forming, greatest vulnerability)
How long is the fetus period?
8 weeks to birth
What happens at 3 weeks gestation?
heart starts beating & blood circulates
What happens at 4 weeks gestation?
(2 to 4 CHAMBER (4 weeks)
2 chamber forms a 4 chamber heart
respiratory system begins
What happens at 5 weeks gestation?
umbilical chord developed
What happens at 8 weeks gestation?
gender distinguishable
What happens at 12 weeks gestation?
organ complete, placenta complete, thumb sucking, fetus urinates in amniotic fluid (11 weeks)
What happens at 16 weeks gestation?
meconium in bowel
What happens at 20 weeks gestation?
quickening, lanugo covers body
What happens at 24 weeks gestation?
vernix caseosa is thick, lecithin present
What happens at 32 weeks?
L/S ratio = 1.2:1
What happens at 36 weeks?
lanugo disappearing, L/S ratio >2:1
When do lungs fully develop?
34 weeks
What is lightening?
Between weeks 38-40, fundal height decreases into the pelvis as the fetus begins to descend into the pelvis in preparation of birth. (This is when the baby settles or drops lower into the pelvis)
What is quickening?
First recognition of fetal movements, or “feeling life”. Commonly described as a flutter and is difficult to distinguish from peristalsis. Fetal movements gradually increase and frequency as pregnancy progresses. 18-20 weeks gestation (nulliparous) or 14-16 weeks (multiparous)
What is Hegar sign?
At approximately 6 weeks of gestation, softening, thinning, and compressibility of the lower uterine segment (uterine isthmus) occurs. (probable sign of pregnancy)
What is Goodell sign?
(Probable sign) Softening of the cervical tip in a normal unscarred cervix (around 6th week) Due to increased vascularity, slight hypertrophy, and hyperplasia (increase in number of cells).
What is Chadwick sign?
Increased vascularity results in a violet-bluish color of the vaginal mucosa and cervix (6-8 weeks
What is alpha-fetoprotein?
maternal serum screening tool for Down’s sydrome in pregnancy. Very reliable in detecting NTDs.
-performed b/t 15-20 weeks
-elevated levels are associated with open neural tube and abdominal wall defects
-USE for elevated levels to rule out fetal abnormalities or multiple gestation.
Types of NTD=Spina Bifida and anencephaly
What are maternal effects from toxoplasms?
§ Influenza- like aching
§ Lymphadenopathy
§ Spontaneous abortio
What are fetal effects from toxoplasms?
§ Congenital toxoplasmosis, LBW, hepatosplenomegaly c, jaundice and anemia
What are maternal effects from AIDS?
breastfeeding contraindicated postpartum
What are fetal effects from AIDS?
the newborn is given an ELISA test for presence of HIV antibodies. If positive but asymptomatic at birth, s/s usually become evident during 1st year of life. FTT, liver and spleen involvement,bacterial